Features 1.The expansion board has a stackable design and can be directly plugged into the program. 2.A simple Web server can be realized by directly using the Ethernet library file in the IDE. 3.Support mini memory card (small memory card) read and write, compatible with standard output port 4.Can realize simple Web server or network applications such as reading and writing digital and analog interfaces through network control. 5.Small size, easy to carry and store, convenient to use and with good performance. Specification Item Type: Network Expansion Board Material: PCB Purpose: Can realize simple Web server or network applications such as reading and writing digital and analog interfaces through network control. Package List 1 x Network Expansion Board